package com.wilson.integration.lease.admin.service.impl;

import com.wilson.integration.lease.admin.service.FileService;
import com.wilson.integration.lease.common.properties.MinioProperties;
import io.minio.*;
import io.minio.errors.*;
import jakarta.annotation.Resource;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {

    @Resource
    private MinioProperties properties;

    @Resource
    private MinioClient client;

    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {
        boolean bucketExists = client.bucketExists(
                BucketExistsArgs.builder()
                        .bucket(properties.getBucketName())
                        .build());
        if (!bucketExists) {
            client.makeBucket(
                    MakeBucketArgs.builder()
                            .bucket(properties.getBucketName())
                            .build());
            client.setBucketPolicy(
                    SetBucketPolicyArgs.builder()
                            .bucket(properties.getBucketName())
                            .config(createBucketPolicyConfig(properties.getBucketName()))
                            .build());
        }

        String filename = new SimpleDateFormat("yyyyMMdd")
                .format(new Date()).concat("/")
                .concat(UUID.randomUUID().toString())
                .concat("-")
                .concat(file.getOriginalFilename());
        client.putObject(
                PutObjectArgs.builder().
                        bucket(properties.getBucketName())
                        .object(filename)
                        .stream(file.getInputStream(), file.getSize(), -1)
                        .contentType(file.getContentType()).build());
        return String.join("/", properties.getEndpoint(), properties.getBucketName(), filename);
    }

    /**
     * 配置bucket权限
     *
     * @param bucketName
     * @return
     */
    private String createBucketPolicyConfig(String bucketName) {
        return """
            {
              "Statement" : [ {
                "Action" : "s3:GetObject",
                "Effect" : "Allow",
                "Principal" : "*",
                "Resource" : "arn:aws:s3:::%s/*"
              } ],
              "Version" : "2012-10-17"
            }"""
            .formatted(bucketName);
    }
}
